US 12,330,401 B2
MDO barrier film, package laminates containing the same, and methods of making the same
Zhan Cheng, Beijing (CN); and Dong Ruan, Beijing (CN)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Nov. 7, 2022, as Appl. No. 17/981,646.
Claims priority of application No. PCT/CN2021/129228 (WO), filed on Nov. 8, 2021.
Prior Publication US 2023/0145052 A1, May 11, 2023
Int. Cl. B32B 27/08 (2006.01); B32B 7/12 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B65D 65/40 (2006.01)
CPC B32B 27/08 (2013.01) [B32B 7/12 (2013.01); B32B 27/306 (2013.01); B32B 27/32 (2013.01); B65D 65/40 (2013.01); B32B 2250/246 (2013.01); B32B 2250/40 (2013.01); B32B 2307/516 (2013.01); B32B 2307/72 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/732 (2013.01); B32B 2439/00 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A machine directional oriented (MDO) barrier film, comprising:
two ethylene vinyl alcohol (EVOH) layers, wherein the two EVOH layers are spatially separated from each other and each of the two EVOH layers has a thickness of 6 microns or below;
an intermediate polyolefin layer between the two EVOH layers, wherein the intermediate polyolefin layer is substantially free of anti-block agent;
tie layers between each of the two EVOH layers and the intermediate polyolefin layer; and
two outer polyolefin layers comprising high-density polyethylene (HDPE), wherein each of the two EVOH layers is disposed between the intermediate polyolefin layer and the two outer polyolefin layers,
wherein the MDO barrier film has a light transmittance of 90% or greater at a wavelength of 611 nm and the MDO barrier film has a total thickness of more than 20 microns to 70 microns.